package Exp_2;

public class BiTreeNode {
    public Object data;
    public BiTreeNode lchild,rchild;
    public BiTreeNode(){
        this(null);
    }
    public BiTreeNode(Object data){
        this(data,null,null);
    }
    public BiTreeNode(Object data, BiTreeNode lchild, BiTreeNode rchild) {
        this.data = data;
        this.lchild =lchild;
        this.rchild =rchild;
    }
}
